computer crashes after cpu upgrade

[akvideoguy]

I just upgraded my cpu from a pentium II 166 to an AMD k-6 2 500 on Windows 98 second edition. I set all of the correct jumpers and switches.My system bios shows the new 500 mhz processesor and Windows boots up fine. I have 256 megs of memory. About 5-10 minutes into windows or an application like Photoshop, the screen goes black and my monitor goes into low power mode and I can't get the computer to respond. I have to reboot and it does it all over again. Is this a crash or a sleep mode problem? Someone told me that they thought there was a windows patch or update for when you upgrade to a much faster processor. I wandered all over their site but couldn't find anything. I had to put the 166 back in so I could get some work done. Any help would be appreciated.

[christo418]

You could start by going into CMOS and turning off power management settings>reboot.

[dead_eye]

What's your motherboard/computer brand? There is no such thing as a pentium 2 166, are you talking about pentium 166 or a pentium 2 166. Did you upgrade using an upgrade kit like those offered by evergreen tech or buy a processor.

[Cricket]

Hi akvideoguy,

It might be a heat related problem, the K6-2's tended to run a little hot. How's the cooling in your case? And which video card are you using? Could be that the added heat from the K6-2 500MHz is causing the video card to over-heat and cause the video to cut out. If you don't have any case fans now, see if you can add 1 intake fan to the lower front part of the case and 1 exhaust fan to the back (near the CPU or video card). Make sure your wires and cables are moved away from the CPU and video card too.

Another thing to do is go back into your case and check to see that all your cards and wires are installed properly.

Also, how many watts does your power supply put out? The 500MHz CPU draws more power than the 166MHz and if the power supply supplies under 150 watts, that might be another thing to look at.

Oh, did you update the BIOS (if necessary)?

:) Cricket

[glc]

Disable all power management in both BIOS and Windows. Yes, it very well may be a heat issue, did you properly install a new heatsink/fan assembly on the K6 using heatsink compound? Reusing the old heatsink/fan off the 166 won't keep that K6 cool enough. Do you have adequate case cooling? To run a K6/2-500 you need PC100 SDRAM DIMM memory, if you have PC66 SDRAM DIMM or EDO SIMM memory that can cause problems.

[dead_eye]

Any updates, sorry I didn't see your pm, akvid, until now.
I have a home built computer with a new Jetway 542c motherboard so the system bios is the most recent version. I had a pentium II 166mhz and replaced it with a new AMD K6-2 500mhz processor...also a new heat sink and fan.
I think it's ok to share system specs.

[Carl Price]

There is/was no such thing as a pentium II 166, the lowest speed p2 ever made was 233 mhz. If it was a 166 it was either a mmx or a nonmmx. Although some mobos handle both, if it was a nonmmx then, in general, you cannot upgrade with a k2 as a nonmmx is a single voltage processor and the AMD a dual voltage. If the mobo was a p2 then it was a slot 1 mobo and there is no way to put an AMD k6 on it.

Glc is right on the memory aspect. Unless the Intel processor is greater than 350 mhz it could use pc-66 ram, which is probably what you had in the system. The AMD can't use that.

[Scat Cat]

I once upgraded to a AMD K-6 2 450mhz when I was using Windows 95.
It caused loads of problems that were sorted out by downloading a patch from
Microsoft.
There used to be a compatibility problem with AMD K-6 2's over 350mhz
and Windows 95. I'm not sure if this would also apply to Windows 98 (?)
but it could be worth going over to the Microsoft site and checking.

Failing that, the symptoms do sound very much like an overheating problem.
Try downloading Motherboard Monitor and check up on how hot the cpu is running.
You may have to pop an extra fan in there.

Good luck.

[melloman]

Just the facts:
There were never any sold PII 166's. If the board is running on both an AMD K6 (any flavor) or a pentium (including mmx) at 166 that would be a direct socket for socket swap. PII's run slot 1,period.

The AMD k6-2/350 update is included in the win98 package, OEM or retail. Win98 was the first to include it. Win95, OSR2, 2.1 all need the k6-2/350 update, available on the AMD site.

The problem could be power management related.

Good Luck! :cool:

[akvideoguy]

Here's where I'm at now. I had to put the Pentium 166 back in just so I could post this reply as the AMD 500 keep crashing on me. I took my machine to a local computer shop and they had it for 2 days and couldn't figure out what was making it crash. Sometimes the screen locks up like a typical Windows crash but most of the time the monitor goes black and into sleep mode. The computer doesn't respond to any keyboard strokes and often I can't even get it to restart with a ctrl-alt-delete. I have to hit the restart button. The fans keep running, unlike the usual stand by mode. The bios is the most recent and they loaded windows over itself. They checked for overheating...was ok...checked power supply, video card, memory and mother board. I couldn't justify them charging me any more since they weren't getting anywhere so I have it back. I put the cpu in a friends machine and it seems to work fine. Here's my stats again... Jetway 542C mother board, 256 megs pc-100 memory, 230w power supply, ATI ALL-in-Wonder 16meg video card and originally a Pentium 166 MMX, socket 7. I'm trying to get an AMD K6-2 500mhz, which is supported by the mother board, to work. If it is a power management problem, what do you suggest? I appreciate all of the replies that I got. Most of the suggestions I tried but to no avail.

[moonlight burner]

hi,akvideoguy, my experience with photoshop 6.0 is , it is a VERY demanding for memory and processor POWER. It's best to get a Powerful Processor and losts of RAM and Harddisk Space and a stable Motherboard and a stable OS like Win2000. My Duron 650 choked a lot when using Photoshop, and I had only 160MB and less than 100MB free disk space, not to mention your processor is only 1xx. Once you've find a match for photoshop, then I think you're happy.

[akvideoguy]

My problem is that with the AMD 500 installed, I can crash just writting an email!!! I think this one has me stumped...and I don't like to be stumped!!!

[melloman]

Try disabling level 2 , or external cache. If it's cache related, it'll run dog-slow, but won't crash. If that's the case, a new CPU might do it. was this AMD 500 a new CPU, or was it used before you got it?

[akvideoguy]

It was a new cpu from my local computer shop. Last night I downloaded the latest update for my ATI video card(12mb!!!!) and it needed the latest DirectX version(11mb!!!)With my snail of a connection that took most of the evening. Hoped it might make a difference...didn't. Crashed this morning in less than 5 minutes and 2 more times after that. I put the 166 back in again(I'm getting pretty fast at it now!)