unksol :
64bit Windows is NOT "much bigger" than 32bit Windows and is necessary to even use the full 4GB he already has. 64bit Windows has run fine on systems with 4GB since XP including Vista and will easily run on less. There is no basis to say he needs more RAM at all.
The most likely scenario is he has not installed any of the laptop drivers. It has NOTHING to do with Windows be 64 bit.
@unksol: Your right, that's why it requires more RAM and hard disk space to utilize x64 over x86.
@OP: Do make sure you have all drivers from Microsoft, Intel/AMD, and you pc manufacturer installed first. If it is still slow then make sure you don't have a crap antivirus like Norton or McAfee on there, then disable windows defender if you use another antivirus program, then clean up or disk files with "Disk Clean Up", then if you have a mechanice HDD you should defragment it with "Disk Defragment". Then if it is miraculously still running slow, kill off your start up applications and everything you keep running in the background. If that doesn't work then expand your RAM to a larger amount. Or you could just expand your RAM and see if that just fixes the problem.[/quotemsg
i tried this.now the reboot speed has decreased by 2 to 3 sec.but still not like win 7 32bit.nd even my games like skyrim and hitman are giving error saying this version is not compatible with this windows.what should i do.and please suggest should i go for windows 8.1