HELP! HP DV4 Laptop Constant not responding

hp Pavilion DV4
turion x2 2.2 gz

4 gb ram 3.75 used
64 bit

i had vista and did the recommended windows 7 home premium upgrade followed all directions but windows was booting very slowly like it was a driver problem, i think i might have had damon tools installed when i upgraded, it installed fine it seemed like, took forever like 8 hours,so after i got all updates done and stuff i had installed norton internet security 2010 and windows 7 said somthing about it not working properly and was not made or this os so i uninstalled all unnesseccary programs/ones i didnt know were compatible and it seems to be working better now. but still hangs constantly, boot time is rediculously longer than it was in vista, but anything i do constant not responding, my hdd light stays lit and i have to wait then its good at times, its very random. i cant think how to fix this event viewer it says the snap in is not responding. plz help windows 7 has been i nightmare since i installed what should i do?

Upgrades can be a nightmare, best way is clean install:

https://www.sevenforums.com/installat...-problems.html

Tutorial quick reference list for Installing Windows 7

Clean Install with a Upgrade Windows 7 Version

i did do an upgrade, i dident want to do a clean install because my laptop drivers are hard to find, suposedly there special HP drivers or some sort,i still have the factory restore partition. i was going to use that to go back to factory settings then update then try to upgrade to 7, or should i just do clean install windows 7 only? i just dont want to be missing drivers for my sound buttons or sd card reader(which dont work right now)the hanging and not responding is VERY random, sometimes it does it every 5 minutes other times it dont do it for hours,

Try drivers from here:

HP Pavilion dv4-1000 Entertainment Notebook PC series- Download drivers and software - specify product name - HP Business Support Center

thank you for the tip, i guess ill try it

first, what do i back up? and second, my windows 7 disk says for use only as an upgrade to a qualifying hp windows 7 upgrade option pc, can i still do a clean install?

actually i think i might have found the problem, i have utorrent installed and i dont think its working right with windows 7 even though the compatibility report says its fine, something that has to do with utorrent accessing the HDD