Computer won't post - Help?

So my friend has an ASUS M4N82 Deluxe motherboard, and he wanted to OC his CPU, a Phenom II x4 955 BE to 3.5MHz, so without changing the voltage, or anything, he adjusted the CPU/NB frequency to 3.4GHz, and every time the computer restarted after exiting the BIOS, the OC would fail. Eventually, my friend got sick of the failing, so he pressed F2 to go back to defaults (F1 would go back to BIOS). When he reset to defaults, the computer started normally, but his CPU was only running at 640MHz, so he shut it down and reset the CMOS. After that, when he restarted, he heard 2 or 3 beeps before he shut it down again. Now the computer will not post, and the monitor will not display an image.

After all this, we took apart the entire computer and reconstructed it, making sure all the cables were secure, everything was mounted properly, etc. --same problem. When the computer boots on, all the fans run properly, and the motherboard's green power LED is still active. Is his mobo dead?

Too bad you don't know how many beeps because that is your motherboard saying : This exact error is what is wrong, look it up on a list.

Had you counted them we could tell you what went wrong.

http://www.manualowl.com/m/Asus/M4N82-Deluxe/Manual/264308?page=59

How did your friend reset his CMOS?

How did your friend reset his CMOS?

ravenguard90

He told me to take out the battery, and we did for about 20 seconds, and afterwards he sort of pushed it back in with a screwdriver. I was worried, so I checked it, but there seemed to be no signs of damage. After that didn't work, we shut it down and pulled the plug to switch the little CPU 3-pronged pins to their reset position, and upon boot-up, it still had the same problem.

@GummiRaccoon, Yeah, I feared that, and I'm pretty sure it was 2 or 3 shorter beeps, and upon searching, I couldn't find any answer to what the motherboard was trying to tell me. We even checked the motherboard's user manual, lol.

[QUOTE="ravenguard90"]

How did your friend reset his CMOS?

Weird_Jerk

He told me to take out the battery, and we did for about 20 seconds, and afterwards he sort of pushed it back in with a screwdriver. I was worried, so I checked it, but there seemed to be no signs of damage. After that didn't work, we shut it down and pulled the plug to switch the little CPU 3-pronged pins to their reset position, and upon boot-up, it still had the same problem.

@GummiRaccoon, Yeah, I feared that, and I'm pretty sure it was 2 or 3 shorter beeps, and upon searching, I couldn't find any answer to what the motherboard was trying to tell me. We even checked the motherboard's user manual, lol.

well I linked you the beep codes, so...

It's my computer here he broke. He told me "Why don't you overclock your CPU since you have had an aftermarket cooler and arctic silver for a while?" Im like okay sure you know what you are doing since you just overclocked your CPU and just installed your new cooler in your computer, go ahead. He went into my BIOS not knowing what he was doing and messed with voltages and stuff probably for my RAM (I don't know why) and my CPU both which have been stable for years and then we booted it up and it booted up sloooowwlllly. My CPU gadget on my desktop was saying my voltage was 640mhz instead of 3200mhz.. I said why did you UNDERCLOCK my computer? We have to shut this down and put everything back the way it was in BIOS. So he went and did that (I assume not back to what everything was) and it did not boot up, it gave a few beeps and said overclocking failed. I was like okay to fix a failed overclock we must take out the CMOS battery to default the BIOS settings, so we did and after that the monitor has not turned on at all since and upon booting we don't see a motherboard post screen.