Thor was dirty. No, Thor was filthy. Thor is Pam’s desktop computer, an Intel quad core box I built for her back in 2008. Next to her desk, it’s raised off the floor a few inches and we regularly clear off the surface dust and air filters but it had been a while – a couple of years, probably, since it’s been properly torn open and cleaned. Lately, signs of instability were growing more frequent. So the other day I opened the case.
Well, I guess it was to be expected. The innards were choked with dust. The squirrel-cage fan on the graphics card, one of those big honkin’ GeForce cards, hardly had room to spin! I looked inside the box, looked at the can of Dust Off in my hand, looked back inside, thought about how many cans I might have in the basement store… Nah, this would never do.
So I set up a work table outside the garage door and hauled out my shop compressor. 100 PSI? I thought about the possibility of blowing components right off the motherboard, the moisture that would accumulate in that air after a few cycles… I changed the blowgun tip to something a little more diffuse and got to work.
It took a while. But when I was finished Thor’s innards once again looked like new. I closed the box, cleaned up my tools, wrestled the box back upstairs. And it wouldn’t boot.
Nothing really seemed out-of-place, I was careful with the air streams, I hadn’t forgotten any cables. Still, no boot. Or, more precisely, the pulsating orbs of Windows 7 starting up would halt and the blips of drive activity would take on a regularity that indicates a hang. To add an interesting twist, it booted nicely to Safe Mode.
Because of the way Windows works, this was pointing toward an issue with video. The card was obviously initializing so I replaced the driver and exercised the various modes. All looked fine but the situation was unchanged.
Maybe the boot drive was going south from running in all that heat before the cleanup, and the shock of moving stuff around pushed it over the edge. Before I went to work I imaged the drive. I could virtualize the image, recover Pam’s settings and apply them to a new Windows 7 install. As part of Thor’s long-overdue maintenance I planned to change out the boot drive for one of those hybrid drives I like and the drive was in there anyway, empty and waiting. The install media booted fine and the installation began. Wouldn’t you know, though, when the installer got the point that it boots the newly installed kernel, before personalization, it hung again!
Puzzling. The hardware POSTs, Safe Mode boots, a normal boot hangs, as does a new Windows install. Log checks in Safe Mode, as well as other diagnostics run from bootable media all seem okay. Everything pointed to a video issue.
So I pulled the GeForce card out, grabbed a loupe and looked it over. Aha! There was corrosion on some of the contacts! Cleaned ’em up, that’s what I did, and coated ’em with Stabilant. What’s that? From the tech notes…
Stabilant 22 is an initially non-conductive amorphous-semiconductive block polymer that when used in thin films within contacts acts under the effect of the electrical field and switches to a conductive state. The electric field gradient at which this occurs is established is during its manufacture so that the material will remain non-conductive.
Thus, when applied to electromechanical contacts, Stabilant 22 provides the connection reliability of a soldered joint without bonding the contacting surfaces together!
It’s amazing stuff. It’s also seriously expensive. It’s by far the most expensive fluid in the house. Old whisky? Nah. Even printer ink is way cheaper. But it works. On the good side, a little goes a long way. I’ve still got more than half of the 15 mL I bought back in 2006.
The graphics card slipped into its connector with friction-free ease. And not only did Thor POST faster than I’d ever seen it POST, but it booted like nothing had ever been amiss.
