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A problem that has flabbergasted me now for a while. On a Dell Latitude E6410, everything works swimmingly when the computer runs on battery. the moment that one inserts a powerpack (e.g. connects the laptop to the electricity net), two things happen (unclear if correlated):
After between 10-40 minutes - the computer will become very slow and unresponsive. Initial checks don't indicate that this has to do with back-up software (e.g. dropbox or Mozypro) or virus scanner, but cannot fully rule out. This is the main problem.
Also - the moment that the power pack is inserted - eitehr Intel Rapid Storage Technology will "detect port 1", or if the former is disabled, Windows will suddenly detect a non-existing D: Drive / DVD drive. (which makes me wonder whehter it misreads the battery pack as an external storage location???). As said - not quite clear to me whether correlated with the problem per above, and if so, what the causal mechanism is, why the computer slows down...
Anyhow - this completely confuses me - and would love to hear any thoughts on the cause, furhter diagnosis and/or and ideally resolution of this problem...
Many thanks in advance,
W
Wouter
Posted 2013-07-29T17:03:39.503
Reputation: 77
You could mess with your windows power options, while your waiting for an answer. If you create a new power plan you can customise it without messing with the standard plans. Then change the advanced settings. In win7 power options are much more extensive than before. – Psycogeek – 2013-07-29T19:02:46.777
1Use the resource monitor in win7, very valuable tool. C:\Windows\System32\resmon.exe with it you should be able to determine what is using cpu, what is working the disk, and even what net stuff might be going on. – Psycogeek – 2013-07-29T23:24:14.507
Thansk for ur comments. i have been using resource monitor and illustro. the weird thing is that random applications (teatimer.exe, launchy, explorer) suddenly become cpu hogs and spike up - if i close one than the other ones take over the CPU hog role. So resource monitor doesnt seem to show the "underlying cause" why there is a CPU constraint... let me know your thoughts! – Wouter – 2013-07-30T17:14:44.550
It is my understanding that if the cpu steps down, the visable indicators of 100% usage are working in that smaller area. So i would want to see my stepping using CPUZ or rightmarks or anything that would show either the cpu Clock at the moment (some cpu monitors) or the stepping live. I do not know how (overheat) throttling displays. Then some way to test your CPU and speed in a controlled way. using prime or intelburn or something. So you can be there and SEE live. I could suspect a baddie or a bad dll too (AVcheck) also a low possibility that a hard drvie is not reacting Disk Speed test – Psycogeek – 2013-07-31T01:16:23.163
Superhelpful. Please forgive my ignorance:
• I didn’t manage to install RMclock – but installed CPUID. Which metrics should I be looking at? CPU clock numbers (Core Speed, Multiplier, Bus speed, QPI link)? – although they didn’t seem to change much at slowdown. Should I look at other indices / metrics? • When you mention AVcheck - do you mean there is maybe process AVcheck.dll that I should check if it is running on my comp, or is this a program that I should download?
• Disk speed test – do you recommend downloading a specific one?
Many thanks in advance, very helpful, W – Wouter – 2013-07-31T15:53:01.717
Stepping is the multiplyer changing. from what your saying there is no change to the cpu , so it is now more likly to be software. Disk speed tool , the simpler the better, one that works right in the OS, just check to see if it all flows along without stopping (say there is another disk activity you cant see, testing disk speed could reveal something?) AV=antivirus. – Psycogeek – 2013-07-31T23:08:48.337
In the win7 Resource Monitor, to see possible signs of stepping and/or throttling Look in the CPU tab. Above the processes list, you will see the CPU Usage & the "% Maximum Frequency". (It is normal for the frequency to reduce when not doing much work.) that max freq could provide good clues. . .Notice also that the services section displays its total cpu usage also, so you could get clues as to the services also. – Psycogeek – 2013-08-01T00:47:05.600