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Computer Acting Strangely After Overclocking

System Specs:
Mobo: Asus M4n68t-m v2
Cpu: AMD Phenom ii x4 2.8 ghz
Ram: Corsair cm3x2g1600c9nx 4GB
Graphics Card: Msi Twin Frozr 3 Hd 7850 2gb
PSU: Xtreme Gear 600W ATX Power Supply

Recently, I tried overclocking my CPU for the first time (big mistake) from stock (2.8ghz) to 3.2 ghz. I upped the voltage to 1.3V (because I saw someone in another thread do the same thing) so I tried it. My computer booted fine, and I ran Prime95 for around 20 minutes and then my computer just shut down. I didn't think it was a big deal, as I just turned it back on and reset the FSB to the normal setting.
A day later, I tried again, this time I left the Voltage on Auto setting in Bios and changed FSB to 215 mhz. I then tested it on Prime95 for around 20 minutes and it was fine. CPU temps were around 45C under full load, no problems there. (I know I should've done more time) I played BF3 for a few minutes, and then my computer just hard froze. Ctrl Alt Del didn't work, no mouse or keyboard input, it just froze. I held the power button to turn the computer off, and when I tried to turn it back on, it would not post, and the cpu fan ran really fast. I just decided to turn it off and waited until tomorrow before I did anything with it.
The next day, I turned on my computer and it booted normally, so I didn't think there was a problem. However, when I was using it, it shutdown again. Then I began to panic. When I turned it on, same thing happens. It doesn't post. After much troubleshooting, I found that when I took out 1 ram and only ran with 1 ram, it boots, however, when I run with both rams, it doesn't post, and the fan turns really fast.
The thing is, it can boot with 2 ram, but rarely. I tried reseting bios, didn't work. I set the ram at its recommended settings (before used to be 1333 mhz @ 1.5V and I set to 1600 mhz @1.6V) didn't work. I don't know what to do at this point. I want to blame the PSU, but I don't understand how 3 days ago, the thing was running fine and all of a sudden, it just breaks like this.

Any suggestions?
3 answers Last reply Best Answer
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  1. Best answer
    If your Computer is not even Booting i would say either you burned your Motherboard or RAMs or CPU or PSU.

    you SHOULD NEVER overclock by READING THREAD. Always ask a Experience person.

    If your computer able to work than this is what you should do

    CLICK
  2. I noticed you didn't list what heatsink and fan combination you had. Did you attempt to overclock with the stock heatsink and fan?

    I looked up your motherboard, and it looks fairly basic, and entry level. For starters, cursory browsing tells me that your motherboard has maybe a four phase power design for your Voltage Regulator Module. If I remember right, most people recommend six, and high-end boards usually have eight or more. In addition, I don't see a heatsink on the VRM. http://www.asus.com/media/global/products/NnpFfLB8oPStiCVO/bxDuTgyzjAOZC7zw_500.jpg this is a picture of your motherboard. Here is a picture of what can also be considered another entry level board, but with some added features: http://www.asus.com/media/global/products/wlwpxOCHGKQvVRLb/EXNuFGRDNdMOrMKG_500.jpg See that slanted "structure" to the left of the CPU socket? That is the heatsink attached to its VRM that helps keeps it cool but also allows for for moderate overclocking attempts.

    So, uh, the safe statement to make here is, I think you damaged something. If I had to bet money, I would say probably the motherboard itself, although who can say with 100% certainty.
  3. EDIT: double-post bug. Can a moderator delete this?
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