G
Guest
Guest
Archived from groups: microsoft.public.windowsxp.basics,microsoft.public.windowsxp.general (More info?)
Hi
Yesterday evening I was asked to control a computer (WinXP HE, SP1, ADSL)
modem, WinXP firewall), because it was too slow. I checked it with 3
different antivirus (AntiVir, Housecall PC-Cillin on-line, AVG) and removed
25-30 infected files, mostly troyans. I checked the computer with Ad-Aware
SE and Spybot too ~70 objects were found and removed. All temporary folders
were emptied. I checked with regedit all Run keys in HKLM & HKCU and removed
all abundant (2 spyware records) from there. Comfile, exefile etc. keys in
HKCR looked OK.
After that, when restarted, all was OK in task manager's TaskList - until
ADSL connection started. Then one of svchost (SYSTEM) processes started to
take more and more CPU. It was 4%-10% at start, then 10%-30%, etc. until
50%-95% after some time. A little after the CPU usage stabilized, there was
a sudden change - CPU dropped to ~20%, and then rised again to ~90% - then
dropped again, etc. The length of cycle was less than a minute.
At same time as svchost, was active taskmgr which used ~4% CPU.
I tried to investigate, what really was using this much CPU (from command
window: tasklist /svc), but tasklist.exe was missing from computer at all.
Then I checked with regedit, what was started from various svchost's
(HKLM\Software\Microsoft\Windows NT\CurrentVersion\SvcHost) , and I deleted
all entries which somehow dad to do with remote access to computer and were
not essential to OS working. Nothing was changed!
Maybe some fresh ideas available here!
Thanks in advance!
--
When sending mail, use address arvil<at>tarkon.ee
Arvi Laanemets
Hi
Yesterday evening I was asked to control a computer (WinXP HE, SP1, ADSL)
modem, WinXP firewall), because it was too slow. I checked it with 3
different antivirus (AntiVir, Housecall PC-Cillin on-line, AVG) and removed
25-30 infected files, mostly troyans. I checked the computer with Ad-Aware
SE and Spybot too ~70 objects were found and removed. All temporary folders
were emptied. I checked with regedit all Run keys in HKLM & HKCU and removed
all abundant (2 spyware records) from there. Comfile, exefile etc. keys in
HKCR looked OK.
After that, when restarted, all was OK in task manager's TaskList - until
ADSL connection started. Then one of svchost (SYSTEM) processes started to
take more and more CPU. It was 4%-10% at start, then 10%-30%, etc. until
50%-95% after some time. A little after the CPU usage stabilized, there was
a sudden change - CPU dropped to ~20%, and then rised again to ~90% - then
dropped again, etc. The length of cycle was less than a minute.
At same time as svchost, was active taskmgr which used ~4% CPU.
I tried to investigate, what really was using this much CPU (from command
window: tasklist /svc), but tasklist.exe was missing from computer at all.
Then I checked with regedit, what was started from various svchost's
(HKLM\Software\Microsoft\Windows NT\CurrentVersion\SvcHost) , and I deleted
all entries which somehow dad to do with remote access to computer and were
not essential to OS working. Nothing was changed!
Maybe some fresh ideas available here!
Thanks in advance!
--
When sending mail, use address arvil<at>tarkon.ee
Arvi Laanemets