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crash after overclocking

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9 replies

by jjvtechrep

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Hello,
Seems I lost the game : I tried to overclock an old AMD K6-II 300 MHz to 450 MHz using the MB BIOS options, and this PC isn't booting any more since then : not even the BIOS.
I know many depends on my MB but is there some trick to make the way back ? Or did I lose this MB or CPU ?
Thanks for replies and best wishes for the new year.

9 replies

by thechas

If the system appears dead, then yes, you likely fried one or the other.

Look around the CPU socket on the motherboard.
You are looking for signs of physical damage to the voltage regulator transistors, resistors and capacitors. If NOTHING looksto be scorched, burnt, or bulging, then try a new CPU.

The Computer Geeks www.compgeeks.com have new and used K6-2 500MHz and slower CPUs for under $30.
Get a new fan while you are at it.

Chas

by jjvtechrep

Thanks for replying, but my MB seemed OK, juqst that it didn't function properly with the new settings.

by wcp

As a last resort before replacing CPU or M/B, clear the CMOS and see if you get any screen.
Read the manual to find where the jumper is how to clear it.

by jjvtechrep

Bingo ! It restarted right away. I did try to clear the CMOS by removing the battery, but that wasn't the good thing to do apparently.

by d_v ant

You should also try clearing the CMOS memory. There should be a jumper on the MB to allow you to do this. Refer to your MB manual for exact instructions. If the BIOS is still set for overclocking, the CPU may be overheating.

by jjvtechrep

Bingo ! It restarted right away. I did try to clear the CMOS by removing the battery, but that wasn't the good thing to do apparently.

by rcom

Some mother boards will reset the bios if you start the PC while holding the end key. If you have the book that came with the mother board use it for instructions on how to reset the BIOS.
If not as mentioned use the jumper to reset bios it's usually located close to the disk battery (often red or yellow) it will have 3 pins with the jumper on 2 you need to switch it to the other 2 pins. So if the jumper was on pins 1 and 2 then you would put it on pins 2 and 3 for a few seconds then put it back to original position. Take out the battery overnight that will clear it.

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