Weak Performance (24 Hours+)

Hi

What Service Pack is your Vista at?

As well as Augies suggestion, use to test msconfig and disable all none essential startups, only leave antivirus, firewall and see if that helps if the next day is ok then enable one other of the startups at a time until you find the culprit (yes will take a number of days to narrow down sadly) if its no better, reneable all the startups.


Then the next question I have is, is your PC really slow to wake up and become usable? if so then a few things maybe the cause from hibernation to your network card and/or USB devices going into sleep mode, as while the system may come out of hibernation/sleep its sometimes cause up with the hardware devices also being in sleep and both just dont seem to want at times to wake up.

To test this out, you need to enter Device Manager and for the network card or Wifi, double click them and click the Power Management tab and untick "allow the computer to turn off this device to save power" and click OK

Do the same as above with USB Hubs found in Universal Serial Bus Controllers branch, reboot and test your PC again, if it is in hibernation the next day, just with one quick press, press the power button of the PC once, generally brings laptops and netbooks out of hibernation quickly so should do the same with a desktop.

Try your PC without the Readyboost USB pens plugged in.