High Ping Lag Issues Freezing Computer

When playing online games I used to get a ping of around 40-50, now it will spike up to 500-700, the other night I saw over a 1000.
I have rebooted my router, modem computer and still the same problem.
My son now shuts off my computer when he plays Xbox saying that it lags him out.

So I figure maybe it's a virus, so I install some new antivirus software, now my computer will boot up but hang after my desktop loads.

Then I remove my hard drive and install a new drive, and try reinstalling windows 7-64,
but not having any luck as my computer freezes during the installation.

So I am thinking maybe it is a hardware problem, bad ram?

Any thoughts?

There are some diagnostics that can be run outside of Windows, and also a hardware/software reset that can sometimes resolve installation/boot issues.

• Run the boot version of Memtest86+ paying close attention to Parts 2 and 3 of the tutorial. Also, in case Memtest86+ misses anything and comes up with no errors, run the extended version of the Windows Memory Diagnostics Tool for at least five passes. These you may want to run overnight since they take a long time to complete (run them an hour before bed each of the next two nights and check before going to sleep that they are still running).
  
  For Part 3: If You Have Errors: If you swap any memory components, follow these steps for ESD safety:
  
  1. Shut down and turn off your computer.
  2. Unplug all power supplies to the computer (AC Power then battery for laptops, AC power for desktops)
  3. Hold down the power button for 30 seconds to close the circuit and ensure all power drains from components.
  4. Make sure you are grounded by using proper grounding techniques, i.e. work on an anti-static workbench, anti-static desk, or an anti-static pad. Hold something metallic while touching it to the anti-static surface, or use an anti-static wristband to attach to the anti-static material while working.
  
  Once these steps have been followed, it is safe to remove and replace components within your computer.
  
  
• Reset the system to a nominal power state, clear temporary memory corruption, and reset BIOS hardware/software connections:
  
  1. Shut down and turn off the computer.
     
  2. Unplug the computer from the wall or surge protector (then remove the battery if it is a laptop).
     
  3. "Remove the computer from any port replicator or docking station, disconnect
     cables to printers or devices such as external monitors, USB memory sticks or SD cards, headset or external speakers, mouse or auxiliary keyboard, turn off WIFI and Bluetooth wireless devices." (Use Hard Reset to Resolve Hardware and Software Issues HP Pavilion dv5000 Notebook PC series - HP Customer Care (United States - English))
     
  4. Hold down the power button for 30 seconds. This closes the circuit and ensures all
     power from components is drained to clear the software connections between the BIOS
     and hardware and clear any corruption in the temporary memory.
     
  5. (If it is a laptop, plug the battery back into the laptop and then) Plug the computer back into the wall. Do not reconnect any unnecessary peripherals; monitor, keyboard,
     and mouse should suffice and be the only peripherals reconnected.
     
  6. Turn it on to reinitialize the software connections between the BIOS and hardware
     

Additionally, is the system still under warranty?

Thanks for your help

I ended up replacing mobo, processor and ram. Now all is good

Glad to hear it. You may mark this thread solved when you are comfortable doing so. :)