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Windows 7rc running extremely slow with 100% cpu usage

Last response: in Windows 7
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July 4, 2009 2:19:07 AM

Hi.I just installed windows 7 rc on a second hard drive(i have vista home premium on the first).It was a clean installation.
It's running extremely slow however and in task manager it shows the cpu usage at a constant 100%.When i say slow,i mean ridiculously slow!
I'm not running any programs and have no anti-virus installed.The only suspicious thing i can think of is that it took an incredibly long time to install (6-7 hours)
I've reinstalled but the problem remains
I would appreciate any help.Thanks

Q6600@2.4Ghz ,4gb pc26400 ram ,Geforce 9500gt
July 4, 2009 6:26:57 PM

If it was a clean install and you haven't used the internet on it to a level, then your hard disk may be bad. Else, you got a bad copy of 7. Did you install a driver of any kind? Perhaps it's not playing nice with 7.
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July 4, 2009 6:46:57 PM

frozenlead said:
If it was a clean install and you haven't used the internet on it to a level, then your hard disk may be bad. Else, you got a bad copy of 7. Did you install a driver of any kind? Perhaps it's not playing nice with 7.


Hi,thanks for the reply.I haven't installed any driver,i suspected the hard drive as well so i've removed it and installed a new sata drive,the old one was a pata.
I'm installing again now but it's still taking forever to install and that's not good.

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July 5, 2009 6:03:43 AM

Running memtest isn't a bad idea, either.
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July 5, 2009 10:16:08 AM

reprovo said:
Hi.I just installed windows 7 rc on a second hard drive(i have vista home premium on the first).It was a clean installation.
It's running extremely slow however and in task manager it shows the cpu usage at a constant 100%.When i say slow,i mean ridiculously slow!
I'm not running any programs and have no anti-virus installed.The only suspicious thing i can think of is that it took an incredibly long time to install (6-7 hours)
I've reinstalled but the problem remains
I would appreciate any help.Thanks

Q6600@2.4Ghz ,4gb pc26400 ram ,Geforce 9500gt


Hi, you dont mention what type of HDD you're using but if by any slim chance you're using an old drive and it's a PATA one rather than SATA, it may be worth checking if it's in PIO mode rather than DMA.
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a b à CPUs
a b $ Windows 7
July 5, 2009 4:29:23 PM

Make sure you install all of the motherboard drivers, especially the chipset drivers.
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July 5, 2009 5:45:23 PM

daship said:
Make sure you install all of the motherboard drivers, especially the chipset drivers.



Found the problem,removed one of the 2gb ram sticks and now it runs fine with the sinle 2gb stick.
The 4gb work fine on the vista 32 bit and the only main reason i downloaded the 64 bit windows 7 was to use all 4 gigs.New problem now lol!
Thanks for the help.It was installed on a pata drive and i removed it and installed a new sata drive but as i mention above that wasn't the problem.Doesn't matter though ,i've been wanting to change the hdd and get rid of the ide cable in the process!
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Best solution

July 5, 2009 8:00:24 PM

solved with a bios update!
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