Steam appears to corrupt DVD-rom windows drivers, fix

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As title. I upgraded a pc for a friend (E8400, asus matx mobo, 4870, 2 x 2gb gskill ram, ocz 600w powerstream psu, retail Win 7 so its got some good quality components) and while the pc worked flawlessly for a few days, the son downloaded his steam apps and games, now the DVD rom drive icon has disappeared from the "my computer" window and windows says it can't load the drivers 'cos they're missing or corrupted (code 39). I've had to reinstal win 7 three times now and everything is fine and dandy until steam gets loaded on and wallop, the dvd rom drive icon disappears again.
This proves to me that there summat in steam, maybe a certain app, thats constantly knocking the dvdrom icon out, and the drive won't recognise any discs inserted into it or autorun, BUT the drive is recognised in the bios.
Any ideas? any help would be appreciated.
 
Can you list the games you've installed on Steam? It's unlikely to be Steam itself that is causing the issues but probably the DRM that ships with one of the games you have on Steam.

That is, assuming it's related to Steam at all.
 
Does device manager show it exists in windows? It could be starforce I guess but I thought that was dis-proven. If it's in device manager check is disk manager and make sure it's assigned a letter.
 
Have you just re-installed Windows or have you formatted your hard drive?

The reason I'm asking is that unlike previous windows versions, a normal format will not erase all windows files (cheeky ********), but you'll still find those Windows configuration files untouched.

Best use an external tool for a proper format.
 
Have you just re-installed Windows or have you formatted your hard drive?

The reason I'm asking is that unlike previous windows versions, a normal format will not erase all windows files (cheeky ********), but you'll still find those Windows configuration files untouched.

Best use an external tool for a proper format.

Are you sure about that? I'm pretty sure that when I wipe the partitions and create new ones that no previous Windows data is preserved.
 
Yep, I first experienced it when I formatted my drive and on reinstalling games found that a lot of the previously manually entered settings for those games had still been retained. That's what made me look further.
 
Yep, I first experienced it when I formatted my drive and on reinstalling games found that a lot of the previously manually entered settings for those games had still been retained. That's what made me look further.

I've never experienced this behaviour. Perhaps you didn't delete the correct partitions or something.
 
Yep, I first experienced it when I formatted my drive and on reinstalling games found that a lot of the previously manually entered settings for those games had still been retained. That's what made me look further.
Sounds like steam cloud to me.
 
Does device manager show it exists in windows? It could be starforce I guess but I thought that was dis-proven. If it's in device manager check is disk manager and make sure it's assigned a letter.

yep, its showing in device manager but with an exclamation mark against it, BUT when I try to update/ instal the drivers for it it says they're missing or corrupted (code 39)

The h/d was formatted first then win 7 was installed, this was done three times, the third time the h/d was installed in a totally different pc with the same dvd drive, and prior to installing the drive didn't show when in the other pc so this points to info held on the h/d and no other cause.
 
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