Testing overclocking on an old pc. Getting error no matter what values i change.

Dumm8

Commendable
May 29, 2016
43
0
1,530
I found my old pc, cleaned it and applied new paste, it still works. It's specs are Core 2 Quad Q6600 and 3 g ram. MB is ASUS P5Q pro with the latest bios.

When i go to the BIOS and try to change the values and try overclocking it, there is a problem. After changing the frequency and voltage even by a little bit, after rebooting the screen is for some reason not getting any signal. Then after restarting it again, it shows a boot error ''Overclocking failed'' and gives the option to return to default values. Does anybody have an idea why? I really would like to test out this old machine's capabilities when the pc is overclocked. Thanks in advance.