Problem installing softwares. Error cabinet file is corrupt

I have been facing problem regarding installing softwares for about 2 years.

For example when i try to install adobe softwares i receive this error.

The cabinet file '' required for this installation is corrupt

Also having problems installing microsoft softwares.

Mainly i face problem when i try to install large softwares. Small ones are installed without any problem.

Sometimes i download software. It is installed without any problem. but when i try to install next time it is corrupted.

From cd i face less problems as compared to computer hard disk.

I have tried almost all anti virus softwares. Nohting found. Once i deleted all partitions. it also did not solve the problem

I don't know whether is virus or hard disk is corrupted or problem is in the ram.

My pc has no other problem. It is working fine.

1) clear the Temporary folder before installing anything.

Windows 7 or Vista: c:\Users\username\AppData\Local\Temp\

Windows XP: c:\Documents and Settings\username\Local Settings\Temp

2) Antivirus software can disrupt installation. Temporarily disable antivirus software while installing.

try these two things and then tell the experience