what do you think? will radeon 6770 hd 1gb ddr5 have any problem if installed on that pc?
According the specs GhislainG linked you to, your PSU is a very anemic 180W. Absolutely no good for any graphic card that requires more power than it can receive from the PCIe slot alone. Even some of those may be to much for it. If you want to upgrade the integrated video you have now, you must first upgrade your PSU.