Laptop beeps when powered on and shows black screen.

[Logik]

Hello,

My laptop is prone to overheating. I read online that this can be fixed by disassembling and cleaning the laptop. I did so, then carefully reassembled it, and now it makes a beeping sound when I power it on. It beeps 5 times in 3 sets. The beeps are in the pattern of 3 long beeps and 2 short beeps. After it does this 3 times, the sound goes away and leaves only a black screen, a constantly beeping Caps Lock (once every 4-5 seconds) and a constant light on the airplane mode button and the AC adapter LED appears to be normal. 

I tried reseating the clock battery, Hard Drive and RAM card many times and also hard resetting. I also could not find any relevant posts related to my issue, and the few that dealt with the same beep code did not provide helpful solutions. I should also note my laptop is very old, but has been working fine (besides the overheating) up until I disassembled it.

Please Help and Thanks!

[y2ken]

Please review this support article: Blink & Beep Codes

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[Logik]

Thanks but as I mentioned before, I tried these methods before several times to no avail, and my caps lock does not beep in a ratio type of pattern, it is just a white led blinking once every 4-5 seconds. The only thing I did not already try was blowing air into the vent, but I took it apart and cleaned it that way.

[y2ken]

I don't mean to send you on a 'wild goose chase' but here is another troubleshooting guide. This one is linked from your computers support home page.

Computer Does Not Start

They also offer a guided solution were a fixes are suggested based on your specific symptoms.

If you have more than one memory module installed you can try installing just one module at a time into different slots to rule out a bad module or slot. 

[Logik]

Okay I tried moving the RAM card. My computer only has one though. It still does not work though. It would help to know what the beep tone meant. Can't find many sources for my specific beep tone. But after looking at the support page I found out that my pc doesn't have LED tones because it is older than 2009.

[y2ken · Accepted solution]

Different BIOS manufacturers such as AMI, Phoenix, Award, American Megatrends, etc.,  have different beep codes and the codes can vary depending on what version of BIOS. So it would be useful to know whose BIOS chip you have. If you can ID your motherboard you should be able to determine it's BIOS manufacturer. If you are lucky, sometimes there is a sticker on the BIOS chip or it is printed on the chip. 

Have you tried an external monitor? It may be a graphics failure.

Have you tried booting with NO memory modules installed.

Curious to know if the beep sequence changes.

Here are some POST troubleshooting steps that you might find helpful.

Here is a list of beep codes from various manufacturers. I don't know how 'dated' this list is.

You can pick up a used memory module on ebay for a few bucks if you wan't to try a different stick of memory.

Since the system worked prior to disassembly I would carefully check EVERY connection to make sure everything is connected properly and securely.

I don't know if I can help any further than I already have. 

Good luck! 

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