Well, as you will know age is no respecter of electronic components.
On both my Tosh laptops the HDD is partitioned. This one is a 250GB and I think it's equally partitioned but the newer one has a 640GB HDD and is split 298 for Win (C)and 297 for Data (D) of which 289 is free (approx 8GB for HDD Recovery), so there is a similar discrepancy in the total which will probably be for the OS.
Your difference is 22GB, 8-9GB for the OS and if you don't have the HDD Rcovery, then I don't know on that one. How much larger is Pro to Home Premium ?
Have you had a look in Task Manager/Processes to see if anything is hogging the memory and perhaps a Rootkit scan would be advisable.
This laptop (my older one) now takes about 2 mins to boot up whereas it was once about 1.2 -1.25 mins but I've never managed to nail it down.
I once managed to knock off about .75 min by uninstalling the two main channels of the ATAPI Controller (via Device Manager) then rebooting, as this reverts (forgot what it's called) to using DMA instead of PIO which is quicker.
Window knocks it back to PIO when there are more that 6 transfer errors, so perhaps you could try that.
If there aren't any channels such as Channel 0 and Chanel 1 then as an Administrator from the cmd prompt enter
set devmgr_show_nonpresent_devices then go back into Device Manager and expand the ATAPI Controllers where they should now display. Have a look in the rest and you'll be surprised at how many duplicated/old drivers there could be.
I'll probably have to give that another go.
Also as an Administrator from the cmd prompt, have you entered
msconfig and under Services, ticked
Hide all MS services, untick the rest of the boxes and reboot to see how (if any) much quicker it boots up.
It will also be worth checking Startup while you're in there.
You then have to reinstate them one by one to see which is the hungriest/threshold, rebooting each time and then deciding which to disable on startup. Something I haven't had the time/patience for yet
What is your Win7 like at navigating IE as extreme lag can be caused by a high error count on your broadband and a router reset can sometimes resolve that, unless there's a fault on the line and it may be worth having your ISP do a line check. You could also try flushing the DNS cache (
ipconfig /flushdns) if both are a bit slow or even changing DNS servers.
Is the XP's lag in IE all of the time or just when both machines are in use and has your brother tried a different browser ?
The more devices sharing the same bandwidth will cause a slowdown if it isn't sufficiently large enough.
I think we've kinda digressed somewhat from your original problem.