hp compaq 8100 elile small from factor is go sleep mode

[shepo]

hp Compaq 8100 elite small  form factor is not working and go sleep mode

that problem is how can I fix ??

[DGroves]

the one method that is guaranteed to work the first time and every time is to reinstall the OS using the drivers posted on the HP site for your system, test sleep then do a system snapshot and install all of the ms updates, test sleep snapshot os again

make NO CHANGES TO the os settings/preferences

now, install desired applications ONE AT A TIME, testing sleep then rebooting and testing sleep again

at some point during this reinstall you may find that sleep no longer works, use the os snapshot restore, and narrow down which update/application is causing the issue