Why do some Win7 programs lag so badly?

Nabbu

Honorable
Jan 12, 2014
21
0
10,510
When I open RUN with WIN+R and start typing anything like, MSCONFIG, it types one letter at a time very slowly over a period of 10 seconds. In this time I'm unable to move the Windows application at all or even close it. It really confuses me since I just upgraded my ram to Corsair 3x2GB 1600MHz and it made no difference in the applications opening faster or smoother.
Specifications:
Lenovo K300-53162HU
Windows 7 Home Premium 64-bit
1 TB HDD
Corsair 2GB 1600MHz (times 3) + 1 2GB RAM 400MHz
Intel Pentium Dual-Core E5800 3.2GHz
No video card
OEM motherboard
AOC e950swn 1366x768