loop boot only recovery working

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I can not boot system.The phone is boot only into recovery mode.My PC does not recognize the phone also ODIN can not connect.adb is not working in recovery mode.When I install a new rom.after flashing it boot in recovery again.
I have installed drivers !!!!!
recovery.log


Starting recovery on Sat Jan 1 00:08:10 2000
framebuffer: fd 4 (320 x 480)
CM Recovery v2.5.1.0 & LK+XM0.6
Loading. Please wait...
...Command: "/sbin/recovery"

.ro.secure=0
ro.allow.mock.location=0
ro.debuggable=1
persist.service.adb.enable=1
ro.factorytest=0
ro.serialno=
ro.bootmode=unknown
ro.baseband=unknown
ro.carrier=unknown
ro.bootloader=unknown
ro.hardware=spica
ro.revision=32
ro.keylayout.path=/tmp/s3c-keypad-rev0020.kl
sec.debug.booterror=0
ro.debugable=1
ro.modversion=LK based on CM v1.4 + JF
ro.build.id=FRG83
ro.build.display.id=FRG83
ro.build.version.incremental=eng.root.20110117.140 215
ro.build.version.sdk=8
ro.build.version.codename=REL
ro.build.version.release=2.2.1
ro.build.date=Mon Jan 17 14:05:13 CET 2011
ro.build.date.utc=1295269513
ro.build.type=userdebug
ro.build.user=root
ro.build.host=i5700-dev-criminal
ro.build.tags=release-keys
ro.product.model=GT-I5700
ro.product.brand=samsung
ro.product.name=GT-I5700
ro.product.device=GT-I5700
ro.product.board=GT-I5700
ro.product.cpu.abi=armeabi
ro.product.manufacturer=Samsung
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=s3c6410
ro.build.product=GT-I5700
ro.build.description=spica-eng 2.2.1 FRG83 eng.root.20110117.140215 test-keys
ro.build.fingerprint=samsung/GT-I5700/GT-I5700/GT-I5700:2.2.1/FRG83/60505:user/release-keys
rild.libpath=/system/lib/libsec-ril.so
rild.libargs=-d /dev/ttyS0
keyguard.no_require_sim=true
ro.media.dec.aud.wma.enabled=1
ro.media.dec.vid.wmv.enabled=1
net.dns1=8.8.4.4
net.change=net.bt.name
net.dns2=8.8.8.8
ro.product.multi_touch_enabled=true
ro.product.max_num_touch=2
ro.config.notification_sound=pixiedust.ogg
ro.config.alarm_alert=Alarm_Beep_03.ogg
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
ro.sf.lcd_density=160
ro.url.legal=http://www.google.com/intl/%s/mobile/android/basic/phone-legal.html
ro.url.legal.android_privacy=http://www.google.com/intl/%s/mobile/android/basic/privacy.html
ro.com.google.clientidbase=android-google
ro.com.android.wifi-watchlist=GoogleGuest
ro.setupwizard.enterprise_mode=1
ro.com.android.dateformat=MM-dd-yyyy
ro.com.android.dataroaming=false
dalvik.vm.dexopt-data-only=1
dalvik.vm.heapsize=30m
ro.telephony.default_network=0
mobiledata.interfaces=pdp0,eth0,gprs,ppp0
wifi.supplicant_scan_interval=90
ro.kernel.android.checkjni=0
ro.setupwizard.mode=OPTIONAL
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt
init.svc.console=running
init.svc.recovery=running
init.svc.adbd=running

.I:Checking for extendedcommand...
I:Skipping execution of extendedcommand, file not found...
...
I:Checking FS types
...
Filesystems:
SYSTEM: rfs
DATA: rfs
CACHE: rfs

do wipe data/cache in recovery

I do this many times

Help me plsss