Today I leant DDR3L is low power, I thought the L stood for laptop. 😳 I really like how you acknowledge your subscribers and Discord members who contribute to your knowledge. They certainly know stuff that I didn’t know I didn’t know. I've complimented your approach and how addictive this channel is a couple of times, but you also have amazing subscribers. In the comments there’s a wealth of information and very little ego. They are people who seem to genuinely want to share information.
Low voltage, yes. Compatibility between slots/board and the memory cards can be either direction, both ways, or neither, but without knowing ahead of time, just uses what's spec'd.
This guy is a proffesor 😂😂 He talks step by step and answers your question without him knowing. You would even realized you finished the whole video listening to him talking 👍
I am a primary school teacher in the mornings (28 years of activity, I have 2 more to go). I also studied electronics and it is a satisfaction for me to be a "student" of young Graham on this channel. All the best.
A tip I have when doing BIOS "rework" is to leave the original chip as is and always have some new, blank chips on hand and mess with THOSE instead. That way, you're sure it's not the chip itself that's faulty by having some bad blocks or other sh!t like that - highly unlikely, but still. As long as there's that 0.01% chance that there IS something wrong with it, you've covered that possibility too. EDIT: I think the KBC in this case is the ENE chip itself. You can tell if you see the traces from the keyboard connector going to it and I know I also read somewhere that it IS possible through some freak adapters and procedures to actually flash this ENE through the goddamn keyboard flex connector :)))
Your skill and your talent are indeed impressive. But your abilities to teach and communicate are truly phenomenal. A rare privilege to find such instruction this side of a pay wall.
Congratulations on your efforts - you and Louis Rossman are real technicians - not some fake fool like Carey Hozerman who is essentially a card swapper who could never operate at the level of competence you show! Bravo!
BIOS works are one of my favorite works, have also often shown in videos. I am often asked to make a video about BIOS repair, but it is not feasible to make such a video that could generally show how to repair BIOS firmware. It is only practical examples that can be shared and with new generations come new problems and knowledge. There are also differences between Intel and AMD (AMD has eg. no Intel ME) With experience it gets easier and easier, you understand the logic behind it, but handing over the whole thing would be extremely difficult. Practice makes the master :)
@SiE-Tech Notebook Reparatur, I think I will drop an email to you tomorrow. I would like to get my ASUS laptop repaired. It has the same issue after a failed windows update that also brought with it a bios update. That bricked my laptop in a single day.
One thing you should also point out is security. A random bios file from the internet could very well contain malicious code or some kind of rootkit. It's not very likely but you never know.
Definitely a possibility. Tho it's hard to imagine that being a productive use of someone's time. Especially someone with that degree of technical skill and knowledge. Still can't be ruled out. Ur right it should at least be mentioned.
it's possible. Is it a likely occurrence or even a likely vector? no. The technical skill to build an effective rootkit that can live in 4MB or even 6MB that can interface in the way it needs to without disturbing/breaking the original functionality is a tough ask, not impossible, but nor easy. Also you have to consider that there isn't a whole lot of incentive to use something that specifically targeting and sophisticated on public forums. People making bios level hacks are doing to to target a government issued model for international espionage, not to steal grammy's recipes.
Exactly! I'm used to finding a bad fuse or resistor or chip and just replacing. Never thought the BIOS would go bad (corrupted) and cause the laptop to not start! I usually just check things with a multimeter, and go from there. 🤷♂️🤷♂️🤦🤦
i have the same laptop and the only difference is, my model is 355v5c Ao6UK and i have upgraded the ram from 6gb to 8gb 12800u DDR3 Samsung ram and upgraded the hard drive from Hitachi 3gb/s Sata II 5400 rpm hard disk drive, to 120gb SSD. and i have upgraded the APU from AMD A6 4400m dual core to AMD A10 5750m quad core APU. The only difference on my laptop is that my one runs on AMD hardware and the one in this video runs on intel.
ME Region is within the main bios and it only on Intel platforms logic board/cpu. The 2nd bios is EC or Recovery. Some business edition laptop such as Fugitsu has 2 bios ic, main (8mb) and ec (1mb). Some boards EC bios is within ENE, ITE controller, which requires programming via keyboard connector. As always a great video 👍. Take care 🙂.
Great video! I've been a server/storage/network guy forever, but recently got "backup desktop support" added to my duties. While I shouldn't need to get this deep into repair, knowledge this definitely will come in handy. You are very skilled! Very well explained, and I enjoy your dry sense of humor! 😂 Thank you!
Hi Graham the kbc is the firmware inside the ENE chip which can also be corrupt, that you must flash through the keyboard connect. Your rtf809 programmer is possible to do that but you need to loook up the correspondented connection on ene chip with wires or keyboard flex., the other one is chipset firmware which is intel me firmware. Also when you make a dump you need also make at least 2 dumps and compare the 2 with hxd editor. Just tips i give. Nice tutorial. To fix the dump it can be the problem with me region firmware otherwise you can fix the bios dump otherwise through replace the me region from the dump and clean me after. For bios is one guy who knows a lot of bios problem who has a youtube channel with Name ERRA the guy is also active on ERS discord. He is fantastic technician. This just to info. You will learn a lot from him abouth bios. This is his channel ru-vid.com/show-UCjnbxkuatqFUOka45PbTQvg Regards Steve From Belgium
You don't need to compare 2 dumps with HxD. You can use tool like md5sum file.img (in linux) or C:\>certUtil -hashfile C:\file.img SHA256 (in Windows) and compare only the checksums of two files. If the checksum is the same than we can be almost certainly sure that files are the same. One more thing: Windows key is stored inside so called SLIC table. You can even add it to the bios which do not have it (if you know what I mean ;)
Have you looked into using an "alternative BIOS" like coreboot? I don't know this laptop is supported by coreboot, but it would be neat to see a video about that. I have a ThinkPad T430 that I flashed with coreboot. You can use me_cleaner to sort of remove the Intel ME, or you need to dump your original BIOS and inject the ME region into the coreboot ROM.
I think that was pretty spot on guide of transferring data from old bios to new. Of checking serial numbers, how about checking stickers on motherboard and comparing these for BIOS' information screen?
Excellent video, Graham. One minor quibble at 43:43, when you blurred out the Windows license key, but you did not blur out the Hex values of that key. Not a problem, though, since I am sure it is just a generic license key anyway.
That was very instructive. The BIOS modding part was interesting, I loved it ! I used to flash BIOS via a ch341 (old version, the new 1.7 version is on his way, thanks to your previous video), I already known the procedure to get the windows product key (it's pretty standard, address 006CD00 in any single bios bin file via an hex editor) but I didn't paid attention to MAC address or s/n. That's a new path for me to explore.
Hello adamant, can i suggest on you that you need a dc bench power supply for troubleshooting on laptop repair because there’s ampere on that, and you will know if there’s a missing on laptop thru ampere
Nice Video, The only thing is that using extremal display doesn't always work, Most of the newer laptops will not give you an output to external display from the bios, I stopped using that option long time ago, Now that there is no more caps lock lights or num lock lights on the internal keyboard from laptops I just use external usb keyboard to test if num lock or caps lock works. other good one that works well is ctrl+alt+del you should be able to detect the reboot .👍
The RTC Reset work if you power cycle the laptop after soldering a bridge, that reset is more in deep than disconnect the bios battery, that clean also any bios password (sorry for my bad English)
Brilliant vid. I have built my own PC`s and I guess like most of your viewers I have a nerdish interest in how they actually work albeit at at superficial level. I too will never do any of this stuff but I find it interesting and you have a very watchable style.
Hi, why not just checking the serial number in the laptop case and use it as a keyboard to search for it in the bios file in any hex editor and then copy the corresponding hex value of it which you can also use as another keyword of search in UEFITool to locate where it's stored without loosing much time in trying to search it manually. That also avoids you to just guess where it can be stored, and it should be showed in bios settings if transfer has been done correctly. check the schematic it has a lot to teach about bios chips :wink: : 2MB chip: drive.google.com/file/d/14SThD8j56iZKVz9iHb7Ucz-HElcXIhNk/view?usp=sharing 4MB chip : drive.google.com/file/d/18VdvYz-tCEpM2w36LJ2rH1QBIfC5oDvN/view?usp=sharing Schematic: drive.google.com/file/d/19NxNODhrML4u3ig8bZWGi15et42vTkke/view?usp=sharing
Yea, this would've been the direction I'd gone in if copying the entire file system hadn't worked. My guess is that the ME Region was actually busted on the old one.
There is nothing in the world but 2 things, which makes a man change his rigid face for a smile: one is when working in a dead laptop and suddenly shows BIOS screen; and the other one is from the watchmaker when mounts the watch and the scapement wheel begins to move regularly. Both are ways to "put in life again" a machine. That's your face in today's video!. It is always a pleasure to see something like this. Congrats, Graham!.
This is well above my knowledge base 🤯🤯🤯 but is amazing to watch and interesting to pick up some understanding just some of the behind the scenes mastery of the often abused pc
Theres a clip type adapter to program the bios chip, you can attach it directly to the bios chip without removing it from the board and flash, saves lot of time and effort.
There is, and I have one of those, but it's horribly unreliable, and I have given up after 20 attempts of fiddling with the clip and just desoldered it, and it works first time
I'm wondering if today you could use a Pi Pico as a SPI BIOS flasher (or anything else you want it to be), for a price similar to a CH341A and cheaper than a RT809F. Last year I went through recovering a Dell BIOS which had slowly developed corruption preventing it from booting (and broke a chip leg and ripped a trace trying to attach probe wires to the motherboard in-circuit since I didn't have hot air), but didn't restore the old data partitions. I didn't know that there was an old and new version of UEFITool and that you could replace the NVRAM data partitions on a chip, thank you for telling me that!
those BIOS chip actually using i2c interface (sda, scl). you can read write without desoldering using arduino or raspberry pi (connect cable to sda scl gnd pins). if the chip doesn't get stand by power just inject bios vcc pin with bench psu, some board need grounding master oscillator to prevent other component from running but keep stand by power.
Good Day Sir, First! Thank you very much for your videos, they are very informative! Do you have a video or some place where you list out all/most of the software tools you have in your IT Toolbox?
This video was incredibly useful. I had a Lenovo Yoga S1 (LA-341P Rev 1.O mb) which only started fan briefly and blinked keyboard background LED. I'd removed BIOS chips and read them and compared to ones I had downloaded. Based on your comments it looked like the downloaded ones hadn't been initialized. Decided to reprogram using a CH-341A programmer. Used Neoprogrammer software since AsProgrammer version wouldn't program reliably. So programmed and soldered the two BIOS chips U8, U2202 and bingo started up . Had wondered about the KB9012 Super IO being bad but was the BIOS. Also everything seem fine so maybe other info like serial number etc is stored somewhere else on this machine. It is from 2013. Thanks!
I use flux for removing chips. it really doesn't help with the heat transfer, but it leaves the solder clean on both sides rather than globby, which is helpful for later
I think I have the same problem on my Asus X50SL. It turns on but no POST, power light is on, caps lock doesnt turn on, DVD drive make noises, no image on screen. Disconected the CMOS battery, still nothing.
I swear, everything Samsung makes, sucks. (Except for their phones maybe.) Their TVs tend to have a backlight that doesn't go to the very edges of the display. LCD monitors that always perform scaling and thus cannot ever be pixel perfect. Their kitchen appliances suck. The whole QLED TV marketing bull crap. I'm sure there's a lot more.
great video, I have the same problem with a Toshiba U945-S4110 - motherboard VCUAA LA-9161P, I did refresh the bios files on the two bios chips from files on the internet, but still no video, do you know where I can find a reliable bios file for those chips?
MAC addresses identify the vendor. That’s one way you can validate the NIC MAC. Imagine if you screwed that up and ended up with a MAC of FF:FF:FF:FF:FF:FF! Fun times!
A GPU situation, apply some heat loosen it up and reposition, Memory card testing time, even cleaning them could work.. Finale answer. Let's find what Graham found..
You always leave me freaking out with each of your videos, you are the only one who is able to teach me something useful, and also things that I did not expect at all.
Awesome! Great info! I have a similar problem, the MB has 2 bios chips, same size 8mb each W25Q64FV, the bios image is only 6mb. No reason not to presume that 1 of them is a backup but after an update the laptop is not starting anymore. How can I shunt one of them so I can force the system to start from the other without desoldering anything? Could you give me a hint?
This is for anybody that can answer my question. I tried googling it. I have a tnhd panel that i would like to upgrade to a 1080 ips. The lootop is a lenovo z50/75 A10 7300.
you are the best teacher i have been learning from since 2020. Please i need help on a step by step procedure of extracting bios bin file from HP, DELL and LENOVO laptops' .exe files.
How did you initially determine that the BIOS had failed before a different component? Is that a common first step after clearing CMOS and checking RAM?
Honestly will my Ethernet still work without it being filled back in as I had a hp 400-434 desktop that’s the intel j2900 model and hp posted the wrong bios which was for the AMD model but had similar board I’d and got bricked upon install. I had to use a bios programmer to unbrick it. I forgot to check for that or didn’t realize that the MAC address was stored in the bios as I was new to this at the time.
Had a question. I have both a alienware 15 r3 and 17 r4 and after I updated both bios to 1.4. All the usb ports stopped working and won't power off. I did a physical bios flash with a flasher to a bios before and after the 1.4 update but same issues. Any idea how to fix. Pretty sure it broke the Intel ME but bios change doesn't fix.
Thanks for dis video very informative.... I an HP probook 645 G1 that comes on when I plug in d charger or battery but d screen is black and d fan is on with full speed plz can u help me out
hey Adamant IT, you vid is extremely informative thank you. i looked for uefi 0.59.0 and could not find it. where can i get it from? any help is greatly appreciated.
46:33 Git uses a very clever algorithm to help you to identify a not working commit called „bisect“. You could apply them here too. You divide the modules in an upper and lower half. Change the lower half with the new modules. Does it work? Issue was in the lower half. Does it not work? Issue is in the upper half. And then you repeat that cycle.
I have a samsung 740u5le laptop and its behaving the same as the one here in the video, does someone have a bios for BA41-02503A? Its an 8mb 25 series chip
I have the exact same one. on, did all the other checks. I don't have the BIOS flash gear, not up to speck sorting bios either, do have heat station. Is there anything else I can do? I've disconnected bios battery, did everything you did barring flashing bios!
Wow my head hurts but in a good way and I have learnt allot. Thanks for an other great video. I use flux for both soldering and de-soldering just because that's just the way I have always done it. Keep up the great work
Wait a second, can all this hassle of finding my mac address, serial number, windows key, ect, be avoided if I write this down before in an event where my laptop does not post?
I always flux for removal too, yes. Not as much usually. It does help a bit with initial heat transfer, but at melting temps it doesn't. But it does allow better contact from iron to solder for primary heat transfer, which makes a huge difference.
When you need to brake out the solder wick to fix a bride connection More Flux!. I do want to send you my old hakko station. The TS is nice for hobbies people not for professionals like you.
also test it right after removing the keyboard.a liquid damage can make your laptop not posting but laptop may start post after just keyboard removed. replace the keyboard and save time repairing your pc.
Awesome video I have one of those western digital my cloud that will not power on and I have a lot of valuable data on there do you take mailings from any of your RU-vid subscribers like from across the pond in the US mate lol
Love your content. But in this repair, is it worth it? The amount of labor you invest to do this repair seems to exceed the value of the notebook and what a customer would pay.
I toasted 3 units so far. But after 100 or more units, I have become quite proficient at not destroying the unit. But we all need to learn and we all make mistakes.
Now was this no post from a virus or Malware that corrupted the data stored in the chip.? >very good video< Wow I must say that was a lot of work to recover...
I would like to know where I can get the bios for this model, I have same issue and have read the winbond chip and there's nothing in it. Can anyone help me?
