Randomly getting 'Request timed out' when pinging wireless router

It happens on my desktop randomly, the more i use the coection the more likely to happen (i.e. the moment when I load a new, playing a videogame with constant coection). The coection drops for a few (or many) seconds and then resumes on its own.

Symptoms

• Whenever this happens the inteet coection stops (of course).
• Whenever this happens I can't ping my router (192.168.0.1) from my desktop computer (Request timed out).
• Whenever this happens I CAN ping my router from my laptop, laptop does not suffer from this problem, suggesting that the problem is with my desktop (maybe the wireless adapter?).
• Signal strength is at -65dBm, however my laptop with the same signal strength presents no problems.

How do i go about troubleshooting this? Any ideas?

Hardware

Things I've already tried

• Resetting reset tcp/ip stacks with -netsh in CMD and flushing DNS to no avail.