Why did my unit crash to bluesceen?

I was using the device to look on Facebook and it froze, then went to blue screen. I powered down the device and rebooted and still comes up bluescreen after the logon screen.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2942205:01crwdne2942205:0:

windows 8 or 7?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0