Weird overclocking experience with P4 Celeron 1.7

[GnatGoSplat]

I had a strange experience with overclocking my P4 Celeron 1.7 on an Asus P4B motherboard.
First night I oc'd it to 2.27GHz (133FSB), standard core voltage, it worked great! I played with it for 2hrs or so without problems.
I decided to run the HotCPU tester, apparently the CPU errored out and caused the computer to reboot.
So I cranked up the core voltage to 1.775V.
It worked fine for awhile, but I got a blue screen.
Cranked it to 1.800V. Worked fine for awhile, ran HotCPU tester and after 4 minutes it started to reach max temp. When it got to 69C (1 degree below max temp) it got a blue screen and rebooted.
I raised it to 1.850V after reading an Anandtech article on this CPU.
Won't boot. Got a blue screen on boot. Unoverclocked it, still got a blue screen. My WinXP got corrupted when I jacked the voltage to 1.850V, but the CPU temps were still in the 50's.
Weird, obviously my CPU won't overclock. Bummer, because the Celeron at 1.7GHz is really a poor performer compared to my XP1600+ machine. In fact, the Celly did not seem to be that much faster than the XP1600+ even at 2.27GHz.

I probably should have gone with AMD on both machines, but I wanted some variety.

 

[squirrel dog]

Seems like your cpu is roasted .

 

[GnatGoSplat]

Could be, but it works fine at normal (1.7GHz) speed so go figure!

 

[MadTom]

What about your memory when running on higher speeds? Tested with Memtest? Try 1:1 ratio for the memory (at 133 MHz this would mean DDR266 speed), and check that AGP is at 66 and PCI at 33 MHz.