Maybe to help eliminate at least one possibility would be to suggest attaching to another project to see if that one locks up your CPU. This will remove the science app as one possibility (and also the WU headers per your theory).

Very few people use windows 98, and SE was renowned for its bugs.

Actually Win98SE was an excelent OS, just not as tolerant of poorly behaved programmes as WinXP is. You're probably thinking of WinME which didn't have the best of reputations.

Do you have all the Win98SE updates from WindowsUpdate.com installed? Have you scanned for adware/spyware recently? Have you tested your system RAM with Memtest86+?

I wonder if this problem is related to the new inclusion of MMX/SSEx into the science app. Your Celeron 766 should be a Coppermine core that supports SSE, so theoretically it shouldn't be an issue.

Hi there, just some thoughts if I may. Assuming you have eliminated the possibility of overheating, does the machine still lock up if you do not use the graphics button or screensaver at all?

If it runs ok like that then I would be suspecting something about the video drivers and the new seti version's OpenGL capability. I run ATI Radeons in my 2 machines and have disabled screensavers and don't use the graphics, since last year, as I used to get occasional computation errors and occasional lockup. Using the drivers without catalyst control panel seemed to correct that for me, but I went to optimised applications without graphics after that anyway (for the extra ~2% crunching).

So I guess some good questions might be, What video card are you running?

Are the drivers up to date?....do any other OpenGL graphics applications exhibit strange behaviour sometimes ?

Oh I see one other small possibility from looking at your machine, [This won't be an issue if it's been working fine with the same hardware configuration for ages]

it lists as 318MB RAM... I guess that might be about 512MB minus some for shared motherboard video ?

That's probably okay but ... I had a PIII running win98se, and as soon as the total of video ram + system ram went above 512mB then win98SE would go ballistic [...You might want to try pulling 1 stick out and see if that fixes it... you also tested the RAM 'recently' with memtest86 right?] ended up putting XP Pro on that machine just fine (until it eventually died from aged capacitors) just another thought.

Hi Jeff,

Could you please unhide your computers so we can see the details of your machine(s)?

Thanks,

Eric

Done.

Hi Jeff,

Could you please unhide your computers so we can see the details of your machine(s)?

Thanks,

Eric

...other folks here with the same problem.

If they could post in this thread the issues they are having it may help solve the problem; as it is you're the only one i'm aware of having this issue.

Of course I already tried all solutions suggested by Seti@Home

Does it still happen with the screen saver off?

Yes. I finally was able to confirm this, on both my trusty Win98SE machine, and the new XP machine I recently set up. Something is wrong with 5.27.

Can you try installing an optomized application without graphics? At the moment, I can't remember where these are.

I can try. Is that something I would download from this site? How does it run, in comparison to the regular application?

Also, I've noticed earlier posts in this thread (from uapel and Grunneger), virtually the same problem reported. With that in mind, I'm trying to understand if (or how) this might be somehow unique to me, especially since it affected my older Win98SE machine, and new XP system, which have nothing in common with one another.

This is an interesting puzzel.

Yes, it is an interesting puzzle.

No, the optimized applications are not downloaded from this site, they come from third party sites. A good optimized application will run faster than the stock application. This is because the optimized applications are for specific CPUs rather than being for all windows intel machines.

I see. So where would I go now?

http://lunatics.at/index.php

No go. Anything that's current that I download and install locks up the machine a couple minutes after the science application starts. I rolled back my machine (GoBack) to the date when it was working fine (under the 5.15(?) science application version, I think), and no troubles (the computer was disconnected from the internet and thought it was a couple weeks ago, running the previous version). No lockups. I then immediately install the latest version of Boinc (after uninstalling the current one), and everything is fine, until it finishes the FFT at the begining of a workunit, then the PC locks up hard. The software seems okay - maybe something to do with the composition of the new work units. I don't know. Intel Celeron 766MHz Win98SE.

Bump.
Any ideas?

Of course I already tried all solutions suggested by Seti@Home

Does it still happen with the screen saver off?

Yes. I finally was able to confirm this, on both my trusty Win98SE machine, and the new XP machine I recently set up. Something is wrong with 5.27.

Can you try installing an optomized application without graphics? At the moment, I can't remember where these are.

I can try. Is that something I would download from this site? How does it run, in comparison to the regular application?

Also, I've noticed earlier posts in this thread (from uapel and Grunneger), virtually the same problem reported. With that in mind, I'm trying to understand if (or how) this might be somehow unique to me, especially since it affected my older Win98SE machine, and new XP system, which have nothing in common with one another.

This is an interesting puzzel.

Yes, it is an interesting puzzle.

No, the optimized applications are not downloaded from this site, they come from third party sites. A good optimized application will run faster than the stock application. This is because the optimized applications are for specific CPUs rather than being for all windows intel machines.

I see. So where would I go now?

http://lunatics.at/index.php

No go. Anything that's current that I download and install locks up the machine a couple minutes after the science application starts. I rolled back my machine (GoBack) to the date when it was working fine (under the 5.15(?) science application version, I think), and no troubles (the computer was disconnected from the internet and thought it was a couple weeks ago, running the previous version). No lockups. I then immediately install the latest version of Boinc (after uninstalling the current one), and everything is fine, until it finishes the FFT at the begining of a workunit, then the PC locks up hard. The software seems okay - maybe something to do with the composition of the new work units. I don't know. Intel Celeron 766MHz Win98SE.

Of course I already tried all solutions suggested by Seti@Home

Does it still happen with the screen saver off?

Yes. I finally was able to confirm this, on both my trusty Win98SE machine, and the new XP machine I recently set up. Something is wrong with 5.27.

Can you try installing an optomized application without graphics? At the moment, I can't remember where these are.

I can try. Is that something I would download from this site? How does it run, in comparison to the regular application?

Also, I've noticed earlier posts in this thread (from uapel and Grunneger), virtually the same problem reported. With that in mind, I'm trying to understand if (or how) this might be somehow unique to me, especially since it affected my older Win98SE machine, and new XP system, which have nothing in common with one another.

This is an interesting puzzel.

Yes, it is an interesting puzzle.

No, the optimized applications are not downloaded from this site, they come from third party sites. A good optimized application will run faster than the stock application. This is because the optimized applications are for specific CPUs rather than being for all windows intel machines.

I see. So where would I go now?

http://lunatics.at/index.php

Of course I already tried all solutions suggested by Seti@Home

Does it still happen with the screen saver off?

Yes. I finally was able to confirm this, on both my trusty Win98SE machine, and the new XP machine I recently set up. Something is wrong with 5.27.

Can you try installing an optomized application without graphics? At the moment, I can't remember where these are.

I can try. Is that something I would download from this site? How does it run, in comparison to the regular application?

Also, I've noticed earlier posts in this thread (from uapel and Grunneger), virtually the same problem reported. With that in mind, I'm trying to understand if (or how) this might be somehow unique to me, especially since it affected my older Win98SE machine, and new XP system, which have nothing in common with one another.

This is an interesting puzzel.

Yes, it is an interesting puzzle.

No, the optimized applications are not downloaded from this site, they come from third party sites. A good optimized application will run faster than the stock application. This is because the optimized applications are for specific CPUs rather than being for all windows intel machines.

Of course I already tried all solutions suggested by Seti@Home

Does it still happen with the screen saver off?

Yes. I finally was able to confirm this, on both my trusty Win98SE machine, and the new XP machine I recently set up. Something is wrong with 5.27.

Can you try installing an optomized application without graphics? At the moment, I can't remember where these are.

Of course I already tried all solutions suggested by Seti@Home

Does it still happen with the screen saver off?

What is tha status of the Hard Disk light when the computer is locked up?