Slow internet but applications seem ok.

Until yesterday both my computers had been working quite well.

Yesterday one of them became very slow on the internet.

Both machines have IE8, Chrome and Firefox. All three browsers on the affected machine are slow to connect to the default Google page and to any subsequent pages I connect to.

Belarc's system details of the affected machine are in the attached jpg.

My i.s.p's (TalkTalk) on-line speed measurements made yesterday evening were about 4Mb/s download, and a little less than a 10th of that upload.
Measured this afternoon they were 1.5Mb/s download and about a 10th of that figure for upload.

The router speed is 12.9Mb/s

Figures for the unaffected machine (Shuttle) measured this afternoon were 10Mb/s download and 790kb/s upload.

Router speed 12.9Mb/s

The affected machine connects to the router over a l.a.n. through the a.c. supply. The icons for the l.a.n. say that its speed is 100Mb/s.

All applications on the affected machine (H.P.) seem to be working fine.

The other machine connected to the router with an ethernet cable and is working normally. Nothing untoward noticed.

I have run Maware Byte's free program and Spybot Search and Destroy Nothing found.

And ESET's on-line scanner, Trend Micro's HouseCall and Panda's on-line scanners found nothing nasty either.

So, the problem is very slow internet activity on either of the three browsers on only one of the machines.

Can anyone suggest what I should do to rectify the situation?

 

Just off the top of my head:

Have you tried changing the patch cord between your PC and the powerline adapter? (this was the culprit with a friends set up)

Resetting the adapter and if no joy then moving it to another outlet are things I'd try as well.

Have you aquired any new electrical equipment, or moved any equipment that might be causing the adapter interference?

 

Thank you Spad.

To try another ethernet cable would mean moving the monitor and the p.c., so I thought that I'd try plugging the a.c. adapter into another outlet.

When I moved an external drive in order to get at it, I noticed that the three l.e.d's were occasionally flashing from all green to all red.

I plugged it into another outlet, upon which it came on line normally, maintaining the l.e.d's at green.

I surmised that this was due to it being reset when re-powered, so I plugged it back into the normal outlet and all is now well

Once again, thank you.

 

Been away from forums for a bit.

You're welcome. Glad you got it squared away.