It's fine for five minutes, usual speeds of 1.4MB/s and then bam, nothing opens and everything keeps timing out. Reset the modem/router and it's the same, five minutes of normalcy and then no speed at all. Have tried two different modem/routers and both give the same result. The phone line is quiet, with no noise.
Have had no problems leading up to this, I just turned the PC on today and this is what's happening.