How to Fix Dell optiplex memory problem error 3 and 4 or computer beeping 

Dude YOU ARE THE COMPUTER BOMB! Did a Google Search when this happened to mine but not before almost throwing it in the dumpster. Followed your easy to understand instructions and I was back in business! Didn't even have to replace any memory banks. Apparently one of them just needed reseating. THANKS SO MUCH!

This fixed my computer . ThankYou !! I just unplugged them and re inserted them and that fixed me. I didnt even know what Memory Modules even looked like. Very Helpful.

Great breakdown with showing how to exactly do it for dummies like me.

I had this same problem on a Dell Optiplex 745 It started out as just amber lights. Then error 3 & 4 lights. After a lot of checking to see if connections were secure. The solution ended up being simply taking out memory and reinstalling it making sure they were seated properly. So this worked for me thanks

WOW. Thank you so much. This really works. My cat knocked my tower over and my tower started making a beeping sound. After watching your video and following your steps, my computer is back up and running.

Thank you so much bro.When i saw my computer is not turning on.I was not in normal state.When i was searching for solution i found your video and followed how you made it and i did same.Then my computer turned on and it is now working fine.Thanks bro you are really a computer god.Once again thank you from Karnataka,India

Thank you this worked for my wife's computer cleaned the memory with q tip and isopropyl alcohol. Now it works flawlessly no more beeping on startup

Thank you for the step-by-step instructions, that 3 & 4 was a real pain.

Upgrading from 4 to 8 RAM , exact problem 4 beeps and error 3/4 lights. So lucky to find your video , i had no idea what to do, Thanks so much man-worked like a dream !UR......

Thank God for the internet and people like you! My sister freaks out when our PC suddenly shuts down (while she's doing her projects) and when we turn it on it beeps like it's gonna explode. This saves us from going to the computer shop for repair. Thank you again! (Works well with Optiplex 960)

this fixed my dads pc, thanks. I’ve also bought 2 pcs from you, great pcs thanks!

My shit was mad dusty. Took them out and aired them off, and my PC is running just fine! Thanks man

Thank you Sir.. My refurbished Dell 780 just arrived from eBay via FedEx with this issue. Mine has no error code lights, but was buzzing just like yours, .so I tried your method in the hope that would save me weeks of hassle with eBay returns and refunds etc. It worked extremely well. It would seem that during transit the RAM was pushed out of alignment. I'm subscribing.

This worked and I am very happy! Thank you so very much!! May God bless you totally today!!!

Bro! You fixed my computer! Thanks man! Likes the video!

Gee. I've watched the other videos, but only yours have worked! Thanks a lot man!

Thanks!! This really fixed my Dell 360. Easy to do and I don’t know shit about computers. You rock!!

thanks it worked too for my dell optiplex 780 +rep man

aw dude thanks bro I own a optiplex 780 and I'm computer illiterate sorta but my digits and beeping disappeared I'm back in the game😁😎 and to think I was gonna get go get serviced mo money in my pocket not to mention the time I saved again thanks..the power of knowledge you guys.. stay in school😉

This video was very helpful and clear. This completely fixed the issue I was having. Thank you.

Thank you for helping me my PC used to not start on the first try and would beep but now its starts first try thank you.

Thks for this great tutorial. My pc is working now. Thumbs up to you! 👍🏻👍🏻👍🏻

it helped me , just 5 minutes of work, thank you dell OptiPlex 755

Hey thank you so much for this, was able to fix my moms desktop. Was just about to throw it away and get a new one.

thank you so much man, fixed my optiplex 780

Thank you sir at first i was told it was a hard drive problem so I bought a ssd but it didn't sole the problem but when you said check the ram i saw one of the clips were open so I closed the clip and powered it on and boom it works fine again

Ty you so much.. I was surfing the net and out of a sudden it said that an error had happened that it was fixing it for me it restarted by itself like four or five times after that it was just beeping and it was showing the same thing as the one on your video I did exactly what you did and it started working I guess one of the memories wasn't on there right.... But I'm on it right now it's working just fine... 🤗🤗

Excellent video and it actually worked for me this afternoon. Now my wife thinks I am a computer genius. Thank you! P.S. I did show her your video and gave you the credit.

Your video so much helped! Tq so much. I save few hundreds by fixed it on my own!!!

Thanks man!!! My RAM was unseated!!!! Can't thank you enough!!!

Your a star been trying all day then I found your video thanks for posting

Thanks brother it really worked in my dell optiplex 755

Thanks Ram was a bit loose,I adjusted it and the PC worked fine thanks again

I see the problem you experienced was a bad RAM stick. But what would one do if the DIMM slots aren't working? I have tested my sticks and they all work fine on slots 2 and 4 but my slots 1 and 3 do not work.

This video has saved my computer twice, thank you thank you thank you

Dude, my didnt beeped but it restarted few times and it would work but maaan, this fixed my problem.. Thanks so much :'3

Really really thank you! Help me a lot when no other site could do it!

Thanks for the upload, you saved my computer! :D

Thanks man,I only have one,I took it out reseat and it worked,awesome :)

Thanks from Mexico!, I could fix it.

Thank you so much! Got my computer back up and running!

Thanks, it worked. I didn't have to replace a module tho; or is it because the one that wasn't functioning wasn't put in properly? Can you run on 3 modules?

Thank you! Sometimes, my computer will start after a few times of trying..but this is good to know! Hopefully i can get another card soon and it will last until then!

Hi.. Let say If I don't have spare for the memory, can I use only 3?

Thank you! Reseated the memory and all is working perfectly!

hello. what if the computer does not accept of the ram sticks u put in. the ram is good. i have a dell 745. lights 3 and 4 on. but none of the ram work in it

thank you for video. I need help My Dell Optiplex 745 SFF No beep and screen blank wont boot, power button light green and light No.2 and 4 is on and fan runing full speed.How to solve the problem. Thank you

Your saved my pc

Thanks a lot you saved my Pc bro keep it up

Thanks, I removed the ram and it worked 100%

I have led 3 and 4 on but no beeps if I take memory out then I get the beeps 1-3-2 then nothing. when I put even on stick in no matter the slot or memory still get 3 and 4 led but no sound at all and now post then what. I'm thinking my bios is crap, reset it cleared it ect and still same problems. when power is supplied it will spin up the fans and then off and one a few times. then when power button is pressed it acts as if it wants to do something but all I get is led 3 and 4, yet no post to screen dont even flash the screen or anything, Also if I just put one stick in it will still show 3 and 4 led's and not just the one but no memory no led 3 or 4 lit and I get the beeps.

Thank you...if I could do a 1000 likes I would...thank you for your knowledge

Thanks, this helped solve a memeory issue with a Dell Precision 490.

thank you for this film, it helps me for repair by myself my old dell pc :-)

I have a optiplex 3010 with the lights 3 & 4 on and when I remove slot 1 ram it goes off I put in working ram in slot 1 and still shows the 3 & 4 lights on does that mean my motherboard is bad

Thank you for this I followed your steps and the 3 and 4 lihht went away now the 1 light is on any suggestions?

Thank you kind sir. It worked! Two of my RAM sticks were fried out.

Do the ram sticks need to stay in the same order when you pull them out?

hey , i ve the same result in the end like you 1 2 and 3 are on double beep but i get no picture on the screen on my Optiplex 380. Any Idea?

THAK YOU SOOOOO MUCH I WAS SO WORRIED

Do I need to buy another memory? Memory card #2 is acting up for me.

Dude thank u soooo much. Ur video led me where i needed to be

Thank u so much.. u just helped me so much, and saved me money I dont have. Bless u dog

Thanks man, this is really helpful. :) (Dell Optiplex 745)

Thanks bro u just saved me!! 💪

Thank you very much, your video helped me a lot.

thanks a million. my ram cards were out of alignment this helped

Sir i have issue 6 beeps in dell optplx 990 not display shows i clean and change ram slots but still issue not gone i have this issue befor this but after 3 days pc automatically start working means showing display

?? 4 u. I tried installing new ram. It wasn't compatible so I put the old ram in it but it won't work. No display. The 1 light on front is lit up. Its beeping I think a 1-3-2or3. Could I really have fried both old sticks of ram by trying the new?

Thanks Buddy, I just Solved my PC Issue.

Thank you very much! Solved my problem perfectly well.

and just because this helped me and I'm grateful I'm subscribed for sure! 😃

Thanks, Buddy! Got me working again!

i have a optiplex 980 with number 3 and 4 of color ambar permanent,, test whit other memory with of other computer and continue the same error... what i can to do else?

thanks man OMG I thought I needed a new computer

What is the computer is silent and only flashes a 3 when I press on power button?

Do you know how I can fix this same sound despite the Ram memory that has been cleaned already and it has been changed to a different slot?

thank you for your help.mine is fixed..GOOD ADVICE

Thanks a lot, I did exactly what you said and problem solved!

nice video.. please sir use audacity for removing noise from audio.

Thanks ! It works and I solved the problem.

Thanks my friend. You are the man

Thanck for your vid! A have it the same problem but I fix it with your help. :)

If I replace on of them does the computer need to be reprogrammed?

Thanks Mr Im Only 11 Years Old And I Fix It😄

thank you very much for this video sir, you are amazing :)

Well, in my case, the problem was that the battery was dead. Replaced it and voilá, everything's ok now

Thank you so much, worked like a dream

What’s the difference from the black slot and white ?

Thank you you're a live saver😍😍😍

i ony have one ram stick in my pc WHAT SHOULD I DO AND I CANT BUY ANOTHER ONE

It hasn't worked. Any further help pls

Omg it worked thanks Man U saved me

Where can I get a drive 3 and 4 from I have a Dell XPS

I feel hopeful thanks so much!! ☺☺☺☺

Thank you it actuall worked

After remove memory sound like beep my computer run good😍😍😍😍😍

MARVELLOUS FIX none but only this worked for my OPTIPLEX

Hello my dell optiplex 780 have Eror code 1 2 3 how to I’m change this problem

I've got a 755, recently I bought 4 x 2GB RAM sticks, total 8GB but Win 7 only reports 4GB. The identical pairs are in the same channels. CPUID CPU-Z reports the correct 8GB in each slot for the two channels. I have read that these old DELL PCs will only work with RAM sticks that have chips on both sides of the PCB. But why does CPUID report them correctly and not Win 7???? Others have reported that Win 7 detects the 2GB sticks as only 1GB each.. Does anyone else have this problem?